Warning: api test destroys datastore
On fresh instance, with 2 job's done, access to job's files is ok (with the interface).
docker exec -i dev-django python3 manage.py test allgo.api.tests.test_ApiJob_get --verbosity 2 --tag state
And job's files have been erased.
I can't decide if this can be considered as usual behaviour.
The test data have to be erased after the test, but the instance data shouldn't be altered.